Array formulas are often referred to as CSE (Ctrl+Shift+Enter) formulas because instead of just pressing Enter, you press Ctrl+Shift+Enter to complete the formula.
SpreadJS supports array constants in formulas. Use curly brackets ({ }) to enclose the array elements. Use a comma to separate elements within a row. Use a semicolon to separate rows within the array. Individual elements can be number values, text values, logical values, or error values. For example:
You can use the setArrayFormula method to set an array formula, similar to the setFormula method. The formula text box shows the array formula surrounded by curly brackets ({ }).
var spreadNS = GC.Spread.Sheets;
window.onload = function () {
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 1 });
initSpread(spread);
};
function initSpread(spread) {
spread.suspendPaint();
var fbx = new spreadNS.FormulaTextBox.FormulaTextBox(document.getElementById('formulaBar'));
fbx.workbook(spread);
var oldArrayRange;
var arrayFormulaStyle = new spreadNS.Style();
arrayFormulaStyle.backColor = "#E0E0FF";
for (var i = 0; i < spread.sheets.length; i++) {
(function (sheet1) {
sheet1.bind(spreadNS.Events.SelectionChanged, null, function (args) {
sheet1.suspendPaint();
var formulaBar = document.getElementById("formulaBar");
var formulaInfo = sheet1.getFormulaInformation(sheet1.getActiveRowIndex(), sheet1.getActiveColumnIndex());
if (oldArrayRange && (!formulaInfo || !formulaInfo.isArrayFormula || !formulaInfo.baseRange.equals(oldArrayRange))) {
for (var r = oldArrayRange.row; r < oldArrayRange.row + oldArrayRange.rowCount; r++) {
for (var c = oldArrayRange.col; c < oldArrayRange.col + oldArrayRange.colCount; c++) {
sheet1.setStyle(r, c, null);
}
}
oldArrayRange = null;
}
if (formulaInfo && formulaInfo.hasFormula) {
var formula = "=" + formulaInfo.formula;
formula = formulaInfo.isArrayFormula ? "{" + formula + "}" : formula;
formulaBar.value=formula;
if (formulaInfo.isArrayFormula && !formulaInfo.baseRange.equals(oldArrayRange)) {
oldArrayRange = formulaInfo.baseRange;
for (var r = oldArrayRange.row; r < oldArrayRange.row + oldArrayRange.rowCount; r++) {
for (var c = oldArrayRange.col; c < oldArrayRange.col + oldArrayRange.colCount; c++) {
sheet1.setStyle(r, c, arrayFormulaStyle);
}
}
}
}
else {
formulaBar.value=sheet1.getValue(sheet1.getActiveRowIndex(), sheet1.getActiveColumnIndex());
}
sheet1.resumePaint();
});
})(spread.sheets[i]);
}
setBasic(spread.sheets[0]);
spread.resumePaint();
}
function setBasic(sheet) {
sheet.name("Simple");
sheet.setArray(0, 0, [[1, 2, 3, 4, 5, 6], [4, 5, 6], [7, 8, 9], [10, 11, 12]]);
sheet.addSpan(0, 7, 4, 3);
sheet.setValue(0, 7, "Set array formula by:\n 1st select the cell / range;\n 2nd enter the formula;\n last press Ctrl+Shift+Enter.");
setDescriptionStyle(sheet.getCell(0, 7));
sheet.setRowHeight(5, 40);
sheet.addSpan(5, 0, 1, 3);
sheet.setValue(5, 0, "Array formula use constants\n ex. ={1,2,3}*{4;5;6}");
setDescriptionStyle(sheet.getCell(5, 0));
sheet.setArrayFormula(6, 0, 3, 3, "={1,2,3}*{4;5;6}");
sheet.addSpan(5, 4, 1, 3);
sheet.setValue(5, 4, "Array formula use range\n ex. =A1:A4*A1:C1");
setDescriptionStyle(sheet.getCell(5, 4));
sheet.setArrayFormula(6, 4, 4, 3, "=A1:A4*A1:C1");
sheet.addSpan(5, 8, 1, 4);
sheet.setValue(5, 8, "Array formula use range & function\n ex. =SUM(A1:A4*A1:C1)");
setDescriptionStyle(sheet.getCell(5, 8));
sheet.setArrayFormula(6, 8, 4, 2, "=SUM(A1:A4*A1:C1)");
sheet.setRowHeight(11, 40);
sheet.addSpan(11, 0, 1, 4);
sheet.setValue(11, 0, "Array formula copy column range\n ex. =A1:A2");
setDescriptionStyle(sheet.getCell(11, 0));
sheet.setArrayFormula(12, 0, 2, 3, "=A1:A2");
sheet.addSpan(11, 5, 1, 3);
sheet.setValue(11, 5, "Array formula copy row range\n ex. =A1:B1");
setDescriptionStyle(sheet.getCell(11, 5));
sheet.setArrayFormula(12, 5, 4, 2, "=A1:B1");
sheet.setRowHeight(17, 40);
sheet.addSpan(17, 0, 1, 4);
sheet.setValue(17, 0, "Array formula out of range value is #N/A:\n ex. ={1,2,3}*{4;5;6}");
setDescriptionStyle(sheet.getCell(17, 0));
sheet.setArrayFormula(18, 0, 4, 4, "={1,2,3}*{4;5;6}");
}
function setDescriptionStyle(cell) {
cell.wordWrap(true).backColor("Accent 5 80").vAlign(spreadNS.VerticalAlign.center);
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css" href="$DEMOROOT$/en/purejs/node_modules/@mescius/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<script src="$DEMOROOT$/en/purejs/node_modules/@mescius/spread-sheets/dist/gc.spread.sheets.all.min.js" type="text/javascript"></script>
<script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<div class="sample-tutorial">
<div id="ss" class="sample-spreadsheets"></div>
<div class="options-container">
<textarea id="formulaBar" rows="10" readonly="readonly"></textarea>
</div>
</div></body>
</html>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
.sample-spreadsheets {
width: calc(100% - 280px);
height:100%;
overflow: hidden;
float: left;
}
.options-container {
float: right;
width: 280px;
height: 100%;
overflow: auto;
padding: 12px;
box-sizing: border-box;
background: #fbfbfb;
}
textarea {
width: 100%;
box-sizing: border-box;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
